linux-kernel - [PATCH 2/4] iommu/amd: Remove change_pte mmu

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Message-Id: <1406729080-2486-2-git-send-email-joro@8bytes.org>
Date:	Wed, 30 Jul 2014 16:04:38 +0200
From:	Joerg Roedel <joro@...tes.org>
To:	iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
Cc:	Joerg Roedel <jroedel@...e.de>
Subject: [PATCH 2/4] iommu/amd: Remove change_pte mmu_notifier call-back

From: Joerg Roedel <jroedel@...e.de>

All calls to this call-back are wrapped with
mmu_notifer_invalidate_range_start()/end(), making this
notifier pretty useless, so remove it.

Signed-off-by: Joerg Roedel <jroedel@...e.de>
Tested-by: Oded Gabbay <oded.gabbay@....com>
---
 drivers/iommu/amd_iommu_v2.c | 9 ---------
 1 file changed, 9 deletions(-)

diff --git a/drivers/iommu/amd_iommu_v2.c b/drivers/iommu/amd_iommu_v2.c
index 2b7de88..524fd67 100644
--- a/drivers/iommu/amd_iommu_v2.c
+++ b/drivers/iommu/amd_iommu_v2.c
@@ -406,14 +406,6 @@ static int mn_clear_flush_young(struct mmu_notifier *mn,
 	return 0;
 }
 
-static void mn_change_pte(struct mmu_notifier *mn,
-			  struct mm_struct *mm,
-			  unsigned long address,
-			  pte_t pte)
-{
-	__mn_flush_page(mn, address);
-}
-
 static void mn_invalidate_page(struct mmu_notifier *mn,
 			       struct mm_struct *mm,
 			       unsigned long address)
@@ -484,7 +476,6 @@ static void mn_release(struct mmu_notifier *mn, struct mm_struct *mm)
 static struct mmu_notifier_ops iommu_mn = {
 	.release		= mn_release,
 	.clear_flush_young      = mn_clear_flush_young,
-	.change_pte             = mn_change_pte,
 	.invalidate_page        = mn_invalidate_page,
 	.invalidate_range_start = mn_invalidate_range_start,
 	.invalidate_range_end   = mn_invalidate_range_end,
-- 
1.9.1

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